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CVE-2016-4463

Published: 8 July 2016

Stack-based buffer overflow in Apache Xerces-C++ before 3.1.4 allows context-dependent attackers to cause a denial of service via a deeply nested DTD.

From the Ubuntu Security Team

It was discovered that Xerces-C XML Parser fails to successfully parse a DTD that is too deeply nested. An unauthenticated attacker could use this vulnerability to cause a denial of service.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
xerces-c
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(3.2.0+debian-2)
cosmic Not vulnerable
(3.2.0+debian-2)
disco Not vulnerable
(3.2.0+debian-2)
eoan Not vulnerable
(3.2.0+debian-2)
focal Not vulnerable
(3.2.0+debian-2)
precise Ignored
(end of life)
trusty
Released (3.1.1-5.1+deb8u3build0.14.04.1)
upstream
Released (3.1.3+debian-2.1, 3.1.1-5.1+deb8u3, 3.1.1-3+deb7u4)
wily
Released (3.1.1-5.1+deb8u3build0.15.10.1)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
impish Not vulnerable
(3.2.0+debian-2)
groovy Not vulnerable
(3.2.0+debian-2)
jammy Not vulnerable
(3.2.0+debian-2)
hirsute Not vulnerable
(3.2.0+debian-2)
xenial
Released (3.1.3+debian-1ubuntu0.1~esm1)
Available with Ubuntu Pro
Patches:
upstream: http://svn.apache.org/viewvc?view=revision&revision=1747619

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H